Originally Posted by
ScottC
There is nothing at all wrong with a dualband GSM worldphone. Everywhere in the world you'll find the 2 frequencies supported by 900 and 1800.
Which countries could you not get it working?
Many countries in the Americas (not just the US and Canada) use GSM on the 1900 and/or 850 bands, but not the 1800 and/or 900 bands:
http://www.worldtimezone.com/gsm.html
Japan and South Korea do not use GSM at all.